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Ceramic coating sagger for manufacturing lithium ion anode active material and manufacturing method thereof

The technology of a positive electrode active material and manufacturing method is applied in the direction of furnace components, furnaces, lighting and heating equipment, etc., which can solve the problems of not being able to be used as a product, the performance degradation of lithium ion positive electrode active materials, etc., and achieve the effect of excellent mechanical strength

Inactive Publication Date: 2014-06-25
日本精细陶瓷有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

As a result, the performance as a lithium ion positive electrode active material is reduced, and it is often impossible to use it as a product.

Method used

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  • Ceramic coating sagger for manufacturing lithium ion anode active material and manufacturing method thereof
  • Ceramic coating sagger for manufacturing lithium ion anode active material and manufacturing method thereof
  • Ceramic coating sagger for manufacturing lithium ion anode active material and manufacturing method thereof

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Experimental program
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Effect test

Embodiment

[0036] Lithium-containing composite oxides as lithium ion positive electrode active material materials use lithium nickel cobalt manganese system (collectively referred to as ternary system) as the starting material, and add 5 kg of the starting material to each lithium ion positive electrode active material. The raw materials were heated in a roller kiln at a maximum temperature of 950°C for 9 hours, and then the temperature in the furnace was lowered by introducing air, and the burnt product of the sagger and the lithium-ion positive electrode active material material was forcibly cooled. This manufacturing process was repeatedly implemented until it was determined that the saggar was unusable, and the lifetime of the saggar was evaluated. The results are shown in Table 1. In addition, as a comparative example, the same test was performed using a sagger main body made of mullite or mullite-cordierite without the spraying process, and the results are shown in Table 2. In add...

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Abstract

The invention provides a ceramic coating sagger for manufacturing a lithium ion anode active material and a manufacturing method thereof, wherein the ceramic coating sagger suppresses material movement from the sagger to the lithium ion anode active material, and the lithium ion anode active material has high heat impact resistance and excellent mechanical strength. The ceramic coating sagger for manufacturing the lithium ion anode active material is characterized in that a random material selected from zirconium oxide, aluminum oxide, silicon oxide, spinel and magnesium oxide is used for performing ceramic coating on a contacting surface between the sagger body and the lithium ion anode active material, wherein the sagger body is made of inorganic material.

Description

technical field [0001] The invention relates to a ceramic-coated sagger for manufacturing lithium-ion positive electrode active materials and a manufacturing method thereof. Background technique [0002] In recent years, expectations for smaller and lighter portable electronic devices such as mobile phones, notebook computers, and video cameras have increased, and expectations for long driving times have increased, and development of lithium-ion batteries as a power source that can achieve these goals has continued. Lithium-ion batteries are small, lightweight, high-capacity rechargeable and dischargeable secondary batteries. [0003] In this lithium-ion battery, a carbon-based material capable of absorbing and desorbing lithium ions is used as the negative electrode active material material, and lithium-containing composite oxides such as lithium-cobalt composite oxide, lithium-nickel composite oxide, and lithium-manganese composite oxide are used as the positive electrode....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F27D5/00
CPCY02E60/10
Inventor 矶村敬一郎山崎宽司齐藤刚
Owner 日本精细陶瓷有限公司
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